https://github.com/mahtohappy updated https://github.com/llvm/llvm-project/pull/83124
>From a4c9d01926176beddbd9b7e704ed23d8a3356c2b Mon Sep 17 00:00:00 2001 From: mahtohappy <happy.ku...@windriver.com> Date: Tue, 27 Feb 2024 03:13:51 -0800 Subject: [PATCH] [Clang][Sema] placement new initializes typedef array with correct size --- clang/lib/Sema/TreeTransform.h | 2 +- .../instantiate-new-placement-size.cpp | 19 +++++++++++++++++++ 2 files changed, 20 insertions(+), 1 deletion(-) create mode 100644 clang/test/CodeGen/instantiate-new-placement-size.cpp diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h index 7389a48fe56fcc..0a46deda194826 100644 --- a/clang/lib/Sema/TreeTransform.h +++ b/clang/lib/Sema/TreeTransform.h @@ -12731,7 +12731,7 @@ TreeTransform<Derived>::TransformCXXNewExpr(CXXNewExpr *E) { } QualType AllocType = AllocTypeInfo->getType(); - if (!ArraySize) { + if (ArraySize) { // If no array size was specified, but the new expression was // instantiated with an array type (e.g., "new T" where T is // instantiated with "int[4]"), extract the outer bound from the diff --git a/clang/test/CodeGen/instantiate-new-placement-size.cpp b/clang/test/CodeGen/instantiate-new-placement-size.cpp new file mode 100644 index 00000000000000..62c4766eb4f997 --- /dev/null +++ b/clang/test/CodeGen/instantiate-new-placement-size.cpp @@ -0,0 +1,19 @@ +// RUN: %clang++ -S -emit-llvm -o - %s | FileCheck %s +#include <new> + +// CHECK: call void @llvm.memset.p0.i64(ptr align 1 %x, i8 0, i64 8, i1 false) +// CHECK: call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 32, i1 false) +template <typename TYPE> +void f() +{ + typedef TYPE TArray[8]; + + TArray x; + new(&x) TArray(); +} + +int main() +{ + f<char>(); + f<int>(); +} _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits